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The Open Radio Access Network (RAN) and its embodiment through the O-RAN Alliance specifications are poised to revolutionize the telecom ecosystem. O-RAN promotes virtualized RANs where disaggregated components are connected via open…

Networking and Internet Architecture · Computer Science 2022-08-03 Michele Polese , Leonardo Bonati , Salvatore D'Oro , Stefano Basagni , Tommaso Melodia

The disaggregated, distributed and virtualised implementation of radio access networks allows for dynamic resource allocation. These attributes can be realised by virtue of the Open Radio Access Networks (O-RAN) architecture. In this…

Signal Processing · Electrical Eng. & Systems 2024-01-17 Mohammed M. H. Qazzaz , Łukasz Kułacz , Adrian Kliks , Syed A. Zaidi , Marcin Dryjanski , Des McLernon

Open RAN (O-RAN) defines an emerging cellular radio access network (RAN) architecture for future 6G wireless networks, emphasizing openness and intelligence which are considered the foundations of future 6G wireless networks. While the…

Networking and Internet Architecture · Computer Science 2022-05-27 Pratheek S. Upadhyaya , Aly S. Abdalla , Vuk Marojevic , Jeffrey H. Reed , Vijay K. Shah

The AI-native vision of 6G requires Radio Access Networks to train, deploy, and continuously refine thousands of machine learning (ML) models that drive real-time radio network optimization. Although the Open RAN (O-RAN) architecture…

Networking and Internet Architecture · Computer Science 2026-01-27 Mounir Bensalem , Fin Gentzen , Tuck-Wai Choong , Yu-Chiao Jhuang , Admela Jukan , Jenq-Shiou Leu

The open radio access network (O-RAN) offers new degrees of freedom for building and operating advanced cellular networks. Emphasizing on RAN disaggregation, open interfaces, multi-vendor support, and RAN intelligent controllers (RICs),…

Cryptography and Security · Computer Science 2024-03-08 Aly S. Abdalla , Joshua Moore , Nisha Adhikari , Vuk Marojevic

Advanced wireless networks must support highly dynamic and heterogeneous service demands. Open Radio Access Network (O-RAN) architecture enables this flexibility by adopting modular, disaggregated components, such as the RAN Intelligent…

Machine Learning · Computer Science 2025-06-03 Fatemeh Lotfi , Hossein Rajoli , Fatemeh Afghah

While the Open Radio Access Network Alliance (O-RAN) architecture enables third-party applications to optimize radio access networks at multiple timescales, real-time distributed applications (dApps) that demand low latency, high…

Networking and Internet Architecture · Computer Science 2026-03-19 João Paulo Esper , Yure Freitas , Pedro Souza , Bruno Silvestre , Joao F. Santos , Alexandre Huff , Cristiano Both , Kleber Cardoso

While the open architecture, open interfaces, and integration of intelligence within Open Radio Access Network technology hold the promise of transforming 5G and 6G networks, they also introduce cybersecurity vulnerabilities that hinder its…

Cryptography and Security · Computer Science 2024-02-14 Azuka Chiejina , Brian Kim , Kaushik Chowhdury , Vijay K. Shah

This research introduces an advanced Explainable Artificial Intelligence (XAI) framework designed to elucidate the decision-making processes of Deep Reinforcement Learning (DRL) agents in ORAN architectures. By offering network-oriented…

Signal Processing · Electrical Eng. & Systems 2025-01-20 Suvidha Mhatre , Ferran Adelantado , Kostas Ramantas , Christos Verikoukis

Recent years have witnessed the Open Radio Access Network (RAN) paradigm transforming the fundamental ways cellular systems are deployed, managed, and optimized. This shift is led by concepts such as openness, softwarization,…

Dynamic resource allocation in open radio access network (O-RAN) heterogeneous networks (HetNets) presents a complex optimisation challenge under varying user loads. We propose a near-real-time RAN intelligent controller (Near-RT RIC) xApp…

Machine Learning · Computer Science 2026-04-08 Oluwaseyi Giwa , Jonathan Shock , Jaco Du Toit , Tobi Awodumila

The Open Radio Access Network (O-RAN) architecture aims to support a plethora of network services, such as beam management and network slicing, through the use of third-party applications called xApps. To efficiently provide network…

Networking and Internet Architecture · Computer Science 2024-05-31 Federico Mungari , Corrado Puligheddu , Andres Garcia-Saavedra , Carla Fabiana Chiasserini

The goal of Next-Generation Networks is to improve upon the current networking paradigm, especially in providing higher data rates, near-real-time latencies, and near-perfect quality of service. However, existing radio access network (RAN)…

Networking and Internet Architecture · Computer Science 2023-03-06 Ibrahim Tamim , Sam Aleyadeh , Abdallah Shami

Adversarial machine learning, focused on studying various attacks and defenses on machine learning (ML) models, is rapidly gaining importance as ML is increasingly being adopted for optimizing wireless systems such as Open Radio Access…

Cryptography and Security · Computer Science 2024-10-24 Ravikumar Balakrishnan , Marius Arvinte , Nageen Himayat , Hosein Nikopour , Hassnaa Moustafa

Interference continues to be a key limiting factor in cellular radio access network (RAN) deployments. Effective, data-driven, self-adapting radio resource management (RRM) solutions are essential for tackling interference, and thus…

Signal Processing · Electrical Eng. & Systems 2022-04-22 Mahdi Eskandari , Shipra Kapoor , Keith Briggs , Arman Shojaeifard , Huiling Zhu , Alain Mourad

Open Radio Access Network (RAN) enables flexible, AI-driven control of mobile networks through disaggregated, multi-vendor components. In this architecture, xApps handle real-time functions, whereas rApps in the non-real-time controller…

Systems and Control · Electrical Eng. & Systems 2026-03-10 Haiyuan Li , Yulei Wu , Dimitra Simeonidou

The transition toward softwarized Radio Access Networks (RANs), driven by the Open RAN (O-RAN) paradigm, enables flexible, vendor-neutral deployments through disaggregation and virtualization of base station functions. However, this shift…

Networking and Internet Architecture · Computer Science 2025-08-04 Francisco Crespo , Javier Villegas , Carlos Baena , Eduardo Baena , Sergio Fortes , Raquel Barco

Open Radio Access Networks (O-RAN) promise flexible 6G network access through disaggregated, software-driven components and open interfaces, but this programmability also increases operational complexity. Multiple control loops coexist…

Networking and Internet Architecture · Computer Science 2026-02-17 Hojjat Navidan , Mohammad Cheraghinia , Jaron Fontaine , Mohamed Seif , Eli De Poorter , H. Vincent Poor , Ingrid Moerman , Adnan Shahid

Recently, the concept of open radio access network (O-RAN) has been proposed, which aims to adopt intelligence and openness in the next generation radio access networks (RAN). It provides standardized interfaces and the ability to host…

Networking and Internet Architecture · Computer Science 2022-01-20 Han Zhang , Hao Zhou , Melike Erol-Kantarci

As wireless communication systems become more advanced, Open Radio Access Networks (O-RAN) stand out as a notable framework that promotes interoperability and cost-effectiveness. An examination of the progression of RAN architectures, as…

Networking and Internet Architecture · Computer Science 2026-04-03 Mira Chandra Kirana , Patatchona Keyela , Fatemeh Rostamian , Deemah H. Tashman , Soumaya Cherkaoui